Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d18c84aa8bee16…

MALICIOUS

PDF

49.4 KB Created: 2020-10-11 01:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: ad861b155d4bfad13b151ab9834e34b1 SHA-1: dc71053ec5dd6e16f6aac5e1071c4e05ad353941 SHA-256: 00d18c84aa8bee16d1f731d7c1384af94e6a288fab6fb79657d66e3db5d05a9c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/strik?keyword=dsm+iv+tr+pdf In PDF document text
    • https://site-1042496.mozfiles.com/files/1042496/mepozixop.pdfIn PDF document text
    • https://site-1042286.mozfiles.com/files/1042286/zojepinivolukoje.pdfIn PDF document text
    • https://site-1042107.mozfiles.com/files/1042107/89563889526.pdfIn PDF document text
    • https://site-1037129.mozfiles.com/files/1037129/26703137013.pdfIn PDF document text
    • http://files.settle4mettle.com/uploads/1/3/2/8/132814439/lorowu.pdfIn PDF document text
    • http://files.yoghana.org/uploads/1/3/1/3/131398100/9360587.pdfIn PDF document text
    • http://files.serendipinart.com/uploads/1/3/0/7/130775379/5317206.pdfIn PDF document text
    • https://site-1039207.mozfiles.com/files/1039207/91704928826.pdfIn PDF document text
    • https://site-1036729.mozfiles.com/files/1036729/37756674639.pdfIn PDF document text
    • https://site-1038367.mozfiles.com/files/1038367/tovotisem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3577/0018/files/webamazunopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3513/1036/files/fafuvom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/economics_of_energy_and_environmental_policy_impact_factor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2725/0848/files/48901265354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9302/4151/files/babolat_drive_max_110_review.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA1 4460 bytes
SHA-256: bf8651e4a1026056717434c05a8cba6f846a9027fafe023e0d6e08779167ec9c
font_01_sfnt_off000089be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BE 9712 bytes
SHA-256: c1514753e8273e72573006801ee5aa1925e64b33a213cff12f20da4d9d0e6747
font_02_sfnt_off0000ab05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB05 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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